Astronaut Edwin Aldrin practices work task aboard KC-135

S66-57387 (13 Oct. 1966) --- Astronaut Edwin E. Aldrin Jr., pilot for the Gemini-12 spaceflight, practices work tasks during zero-gravity training. He is secured to a mock-up of the Agena Target Docking Vehicle by special tethers. The training took place onboard an Air Force KC-135 jet aircraft. Photo credit: NASA